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BEAKED WHALES                                 367

fourteen ;  the   Ftcapula.   has not  tlie concave   face that it has   in
IJhy$etr.r. The functional tcetli of the lower jaw seem to be
reinforced by two on each side of the upper jaw. ^Moreover, the
articulation of the ribs with the vertebrae does not yhow the
very anomalous state of affairs that characterises JPhyseter, where
the two heads of a rib may be upon one vertebra.
"While   there   is   no   doubt   as   to   the   generic   distinctness   of
Ktigin,   there   is   again    the   same    difficulty   tliat   is   met   with
throughout the whole of the order in settling into how many
species the genus recjuires dividing.
"We can dismiss, as unnecessary, additional generic names
(J57tt/j/fys*tffWJ, Galligtmthva'j, but there do appear to be reasons for
allowing: two species, if the accounts of their osteology are to be
depended upon. One of these is JC. Irrevicfi*s9 with thirteen pairs
of ribs, no teeth in the upper jaw, fourteen or fifteen on each side
of the lower jaw, vertebral formula G V, D 13, JL 9, Ca 259 and
phalaiigeal formula I 2, 11 8, III 8, IT 89 V 7.
The   other will  then be  JC. simus, with fourteen pairs of ribs,
two teeth in the upper jaw, nine in eacli ramus of the lower jaw,
vertebral formula C 7* D 14, L 5, Ca 24S and phalangeal formula
I 2, II 5, III 4, IV 4, V 2.
A California!! species has been called ^K. Jtoweri.,, whose teeth,
seem to be particularly long and recurved. And the IsTew Zealand
1C. pott&i has been held to be also a distinct form. There seems
to be nothing of special interest to record about the way of life
of these Cetaceans, which are but imperfectly known,
Sub-Fam. 2. Ziphiinae.—Teeth in the lower jaw not more
than two on each side. A distinct lachrymal bone. Stomach
with very numerous compartments.
These Whales are all of moderate size, not exceeding 30 feet
or so in length. They have a falcate dorsal fin rather near the
end of the body ; the muzzle is prolonged, hence the name often
given to them of " Beaked Whales." The throat is grooved; the
blow-hole is single and median* cresceutic in form, with the
concavity pointing forwards. A character possibly differentiat-
ing the Ziphioids from other Whales is the fact that the body
ends in a rounded projection between the flukes of the tail.
This lias at any rate "been noted in Mcsoplodon* Jfflipfyiw, and
IlyperoO'don^ The .ZipMoid Whales ar© by no means common;
indeed of MermrdinB but four or five specimens nave ever bean